Hefey bubt



(No Model.) 2 Sheets-Sheet 1.

H. BURT.

BOILER FOR HEATING PURPOSES.

Patented Dec. 16, 1884 2 Sheets- Sheet 2.

(No Model.)

v HLBURT. BOILER FOR HEATING PURPOSES.

Patented Dec. 16, 1884..

flu-VENTUR- N. PETERS, Plmluillh Uivrrnn HENRY BURT, OF DANFORTH, NEWYORK.

BOILER FOR HEATING PURPOSES.

SPECIFICATION forming part of Letters Patent No. 309,436, dated December16, 1884'. Application filed August 18, 1884. (No model.)

To all whom zit may concern Be it known that I, HENRY BURT, of Danforth,in the county of Onondaga, in the State of New York, have invented newand useful Improvements in Boilers for Heating Purposes, of which thefollowing, taken in connection with the accompanying drawings, is afull, clear, and exact description.

This invention consists in a novel construction and combination of afire-box, a waterjacket surrounding tl1efire-box, and a smokejacketsurrounding the water-jacket and communicating with the firebox, thewhole forming a simple and efficient apparatus for heating, in a mosteconomical manner, water to be conducted through green -honses or otherbuildings to be heated, and also presenting great externalheat-radiating surfaces, all as hereinafter more fully described, andspecifically set forth in the claim.

The invention is fully illustrated in the annexed drawings, whereinFigure 1 is a front end View of the heating apparatus. Fig. 2 is avertical transverse section on line 00 x in Figs. 3 and 4. Fig. 8 is avertical longitudinal section, and Fig. 4 is atop plan view, with thesuccessive shells of the apparatus partly broken away to betterillustrate the construction and relation of the same.

Similar letters of reference indicate corresponding parts.

A represents the firebox, of any suitable shape, formed of metal, andwith a wide outward-projecting flange, a, around its base.

B denotes a water-jacket placed over the fire-box, so as to surround thesame on all sides and top with a water-space between them, saidwater-jacket being provided at its base with an outward flange, b, bywhich it is supported on the flange a of the fire-box.

O is a smoke jacket placed over the waterjacket, and surrounding thesame at its sides, rear, and top, and having at its base an outwardflange, 0, extended along the two sides thereof, by which flange itrests on the flange b of the water-jacket. A suitable packing, 6, isinterposed between the flanges a and b of the fire-box and water-jacket,to render the joint water-tight, the three shells A,

B, and G being tied together by means of bolts d d, passing through theflanges, the bolts being provided with nuts, to admit of tightening thejoint and of taking the apparatus apart when required for repairs or forcleaning the interior of the water-jacket and smoke-jacket.

r and .9 represent, respectively, the waterinduction and water-eductionpipes of the water-jacket.

F is a fine extended from the rear end of the fire-box to thesmoke-jacket, and f is a partition in the smoke jacket above the flue F,said partition being extended toward the opposite or front end of thesmokejacket, and terminating thereat with openings on m. The products ofcombustion are thus compelled to pass from the flue F along the lowerportion of the smoke-jacket to the front end thereof, and thence upthrough the openings at m, and back through the upper portion of thesmoke-jacket to the exit-flue H, which is at the same end of thesmoke-jacket which is tapped by the flue F.

It will be observed that by the described arrangement of parts thewater-jacket is impinged by the products of combustion on all of itsinner walls, and on the greater portion of its outer walls, and on bothsides of its top portion, and therefore the water in the jacket B isheated in a most effective and economical manner. I

In the partition f, directly over the flue F, is a port, a, providedwith a damper, 9. By opening the latter a direct passage for theproducts of combustion is formed from the flue F to the exit H, saidpassage being required when first starting the fire in the firebox A.

. Having described my invention, what I claim as new is The combination,with the fire-box A, of the water-jacket B, surrounding the fire-box,the smoke-jacket O, surrounding the waterjacket, the flue F, extendedfrom the end of the fire-box into the smokejacket, the partition f,arranged in the smoke-jacket, above the flue F, and extended toward theopposite end of said jacket and terminating thereat with the opening m,the direct exit-port n, 1 of two attesting witnesses, at Syracuse, inthe over the flue F,-pr0vided with the damper g, county of Onondaga, inthe State of New York, and the exit-flue F, over the port 02, all c0nthis 6th clay of August, 1884.

structed and combined substantially as de- HENRY BURT. [1 s] scribed andshown. 1 W'itnesses:

Intestimony whereof Ihavehereunto signed FREDERICK H. GIBBS, my name andaffixed my seal, in the presence ALBERT BURT.

